31690435348 has 48 divisors (see below), whose sum is σ = 67255534080. Its totient is φ = 12867753600.

The previous prime is 31690435339. The next prime is 31690435363. The reversal of 31690435348 is 84353409613.

It is a super-2 number, since 2×31690435348² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31690435298 and 31690435307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 875863 + ... + 911326.

It is an arithmetic number, because the mean of its divisors is an integer number (1401156960).

Almost surely, 2^31690435348 is an apocalyptic number.

It is an amenable number.

31690435348 is an abundant number, since it is smaller than the sum of its proper divisors (35565098732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31690435348 is a wasteful number, since it uses less digits than its factorization.

31690435348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787248 (or 1787246 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 31690435348 in words is "thirty-one billion, six hundred ninety million, four hundred thirty-five thousand, three hundred forty-eight".